CN218440774U

CN218440774U - Program control valve for S-Zorb device

Info

Publication number: CN218440774U
Application number: CN202222356669.7U
Authority: CN
Inventors: 暴沛然
Original assignee: China Petroleum and Chemical Corp
Current assignee: China Petroleum and Chemical Corp
Priority date: 2022-09-05
Filing date: 2022-09-05
Publication date: 2023-02-03
Anticipated expiration: 2032-09-05

Abstract

The utility model relates to a gasoline desulfurization equipment technical field especially relates to a programmable valve for S-Zorb device. The program control valve for the S-Zorb device comprises a valve seat, a first sealing element, a valve body and a second sealing element. The valve seat is provided with a first through hole, and a boss is arranged around the first through hole in an annular mode; one end face of the first sealing element is abutted with the table-board of the boss; the valve body is used for being rotatably connected with an external device, is arranged on one side of the first sealing element, which is deviated from the valve seat, and is abutted against the first sealing element; the second sealing element is arranged on the periphery of the boss in a surrounding mode, one end face of the second sealing element is abutted to the first sealing element, and the other end face of the second sealing element is abutted to the valve seat. That is, the utility model discloses a design of second sealing member has improved the life of S-Zorb device program control valve.

Description

Program control valve for S-Zorb device

Technical Field

The utility model relates to a gasoline desulfurization equipment technical field especially relates to a sequencing valve for S-Zorb device.

Background

S-Zorb is a technology developed by COP corporation for catalytic gasoline desulfurization that can produce low sulfur gasoline below 10ppm with low octane number loss. At present, the failure rate of the existing S-Zorb device is high, mainly because the S-Zorb device has high requirements on the service condition of a valve. The S-Zorb programmable valve performs at least one switching action in one cycle, and partial valves perform even two to three switching actions. In general, the S-Zorb device ball valve is actuated more frequently. And because the process medium of the S-Zorb technology is adsorbent powder or gas with adsorbent powder, the particle size of the S-Zorb technology is 20-60 um, and the Rockwell hardness of the S-Zorb technology is about 60. The adsorbent powder agglomerates when encountering water vapor, and the hardness of the block is greater than that of the powder.

In general, the leakage rating design requirement for programmable valves of S-Zorb devices is class VI, i.e., zero leakage. The adsorbent powder passes through the gap between the valve seat and the valve body when the valve acts, and then erodes the back of the valve seat and the valve body, so that the sealing failure is caused. As is known, nearly 30 sets of S-Zorb devices are in operation in China, most of the S-Zorb devices are sealed by one metal seal, and if the seal meets the zero leakage requirement, the requirements on processing, material, specific sealing pressure and the like of a sealing surface are very strict, so that a sealing box of the valve in the type under the working condition cannot be satisfied. The manufacturer also makes related improvement measures, including replacing metal sealing with a perfluoro ether rubber O-shaped ring seal, although the sealing performance is improved, the temperature resistance can not meet the service condition of 427 ℃, even the O-shaped ring seal is carbonized and loses efficacy, so that the valve fails. Therefore, the service life of the currently used programmable valves of the S-Zorb device is short.

SUMMERY OF THE UTILITY MODEL

The utility model aims at: provided is a program control valve for an S-Zorb device, which can improve the service life of the program control valve for the S-Zorb device.

A programmable valve for an S-Zorb device is provided, including a valve seat, a first seal, a valve body, and a second seal. The valve seat is provided with a first through hole, and a boss is annularly arranged around the first through hole; one end face of the first sealing element is abutted with the table-board of the boss; the valve body is used for being rotatably connected with an external device, is arranged on one side, away from the valve seat, of the first sealing element and is abutted against the first sealing element, and is provided with a second through hole which is used for being communicated with the first through hole when the valve body is positioned at a certain rotating angle; the second sealing element is arranged around the periphery of the boss in a surrounding mode, one end face of the second sealing element is abutted to the first sealing element, and the other end face of the second sealing element is abutted to the valve seat.

Optionally, a side surface of the valve seat is provided with a sinking groove, the first through hole penetrates through the other side surface of the valve seat to the groove bottom surface of the sinking groove, the boss is arranged on the groove bottom surface of the sinking groove, and the first sealing element and the second sealing element are arranged in the sinking groove.

Optionally, an end surface of the first sealing element facing away from the boss is flush with a side surface of the valve seat where the sink groove is provided.

Optionally, the valve body is spherical.

Optionally, a contact surface of the first sealing element and the valve body is an arc surface.

Optionally, an axis of the second through hole is perpendicular to a rotation direction of the valve body.

Optionally, the diameter of the second through hole is smaller than the diameter of the first through hole.

Compared with the prior art, the utility model discloses programme-controlled valve for S-Zorb device has following beneficial effect:

the programmable valve for the S-Zorb device includes a valve seat, a first seal, a valve body for rotational connection with an external device, and a second seal. The valve seat is provided with a first through hole, and a boss is arranged around the first through hole in an annular mode; one end face of the first sealing element is abutted with the table-board of the boss; the valve body is arranged on one side, away from the valve seat, of the first sealing element and is abutted against the first sealing element, the valve body is provided with a second through hole, and the second through hole is used for being communicated with the first through hole when the valve body is positioned at a certain rotating angle; the second sealing element is arranged on the periphery of the boss in a surrounding mode, one end face of the second sealing element is abutted to the first sealing element, and the other end face of the second sealing element is abutted to the valve seat.

The first sealing element is made of metal and plays a role in rigid sealing on the valve. The second sealing element graphite material plays a role in flexible sealing of the valve, and is mainly used for blocking process media from leaking from a gap between the boss and the first sealing element to a gap between the first sealing element and the valve body. Furthermore, the second sealing element effectively prevents the process medium from eroding the back surface of the valve seat and the valve body, delays the time of valve sealing failure and prolongs the service life of the valve. That is, the design of the second sealing element of the programmable valve for the S-Zorb device can improve the service life of the programmable valve for the S-Zorb device.

Drawings

Fig. 1 is a schematic diagram of a program control valve for an S-Zorb device according to an embodiment of the present invention.

In the figure, 10, valve seat; 11. a first through hole; 12. a boss;

20. a valve body; 21. a second through hole;

30. a first seal member;

40. a second seal.

Detailed Description

To facilitate understanding of the present invention, the present invention will be described in more detail with reference to the accompanying drawings and specific embodiments. It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may be present. The terms "vertical," "horizontal," "left," "right," "inner," "outer," and the like as used herein are for purposes of description only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

Referring specifically to fig. 1, a schematic diagram of a programmable valve for an S-Zorb device according to an embodiment of the present invention is shown, which includes a valve seat 10, a valve body 20 for rotatably connecting with an external device, a first sealing member 30, and a second sealing member 40. In general, a programmable valve is a shut-off valve driven by pneumatic, hydraulic or other means. The valve has higher hardness and mechanical strength, and always performs periodic action without leakage; the valve is fast in opening and closing speed; remote control, centralized control and automatic control can be realized; the gas (liquid) cylinders with different inner diameters and strokes can be selected and matched according to different using conditions, and the application range is wide. The parts of the programmable valve for the S-Zorb device according to the embodiment of the present invention will be described separately below.

The valve seat 10 is provided with a first through hole 11, and a boss 12 is annularly arranged around the first through hole 11. An end face of the first seal 30 abuts the land of the boss 12. The valve body 20 for rotational connection with an external device is provided on a side of the first sealing member 30 facing away from the valve seat 10 and abuts against the first sealing member 30. An external device such as a housing. The valve body 20 is provided with a second through hole 21, and the second through hole 21 is used to communicate with the first through hole 11 when the valve body 20 is at a certain rotation angle. The second sealing element 40 is arranged around the boss 12, one end surface of the second sealing element 40 is abutted against the first sealing element 30, and the other end surface is abutted against the valve seat 10. The second seal 40 is used to close off the gap between the first seal 30 and the boss 12 from which process media can leak.

When the valve is opened, the first through hole 11 and the second through hole 21 are communicated, and the process medium flows through the first through hole 11 and the second through hole 21 from the valve seat 10. It will be appreciated that process media may leak from the gap between the first seal 30 and the valve body 20 and the gap between the first seal 30 and the boss 12. The second seal 40 is used to close the gap between the first seal 30 and the boss 12. The contact surface between the first seal 30 and the valve body 20 is an arc surface in order to reduce a gap between the first seal 30 and the valve body 20 and to reduce a friction surface therebetween. The contact surfaces between the first sealing element 30 and the valve body 20, the contact surface between the first sealing element 30 and the boss 12, and the contact surface between the second sealing element 40 and the first sealing element 30 and the contact surface of the valve seat 10 are excessively ground before the installation of the sequencing valve is completed, so that the roughness between the two surfaces is reduced.

In order to make the first sealing member 30 not higher than the surface of the valve seat 10, a sunken groove is formed on one side surface of the valve seat 10, the first through hole 11 penetrates from the other side surface of the valve seat 10 to the bottom surface of the sunken groove, the boss 12 is formed on the bottom surface of the sunken groove, and the first sealing member 30 and the second sealing member 40 are both formed in the sunken groove. The first seal 30 is mounted in the sink groove, which is beneficial for protecting the first seal 30 from wear. In addition, the sink groove has a fixing function for the second sealing member 40. Preferably, the end face of the first seal 30 facing away from the boss 12 is flush with the surface of the valve seat 10 on the side where the sink is provided.

Typically, the valve body 20 is spherical. Of course, in other embodiments, the valve body 20 may also be cylindrical, and the second through hole 21 forms an angle with the rotation direction of the valve body 20. Preferably, the axis of the second through hole 21 is perpendicular to the rotational direction of the valve body 20. In order to achieve a better sealing effect, the diameter of the second through-opening 21 is optionally smaller than the diameter of the first through-opening 11, thereby reducing leakage of the process medium between the contact surfaces of the valve body 20 and the first seal 30.

It is noted that the first sealing member 30 is made of a hard material such as metal, which is suitable for the impact between the valve body 20 and the valve seat 10. The second sealing member 40 is made of soft material such as graphite, and the graphite has the characteristics of high temperature resistance, small thermal expansion coefficient, good lubricity and chemical stability and the like due to the laminated special structure of the graphite. The graphite can withstand the drastic change of temperature without damage when in use, and the volume change of the graphite is not large and cracks cannot be generated when the temperature changes suddenly. The seal of graphite material can cope with a high temperature environment. The second seal 40 is primarily intended to withstand the pressure from the first seal 30 and the surface of the valve seat 10.

The embodiment of the utility model provides a S-Zorb is work flow of sequencing valve for device: when the program control valve is installed, the mutually-contacted surfaces of the valve seat 10, the valve body 20 and the first sealing element 30 need to be ground to meet the requirements of metal sealing or hard sealing. When the valve is opened, the valve body 20 is turned to a certain angle, the first through hole 11 and the second through hole 21 are communicated, and the process medium flows through the first through hole 11 and the second through hole 21 from the valve seat 10. The first seal 30 is primarily responsible for leakage of the process medium in the axial direction of the first through opening 11, and the second seal 40 is responsible for leakage of the process medium in the radial direction of the first through opening 11. When the valve is closed, the valve body 20 rotates by another angle, and the first through hole 11 is isolated from the second through hole 21.

To sum up, the embodiment of the present invention adds a second sealing element 40 on the basis of the primary sealing of the first sealing element 30 to prevent the process medium from eroding the back of the valve seat 10 and the valve body 20 through the gap between the first sealing element 30 and the valve seat 10 during the valve operation. Additionally, the utility model discloses simple structure, easily operation can wholly improve valve life, has still overcome the drawback that current perfluoroether rubber material made second sealing member 40, is applicable to the high temperature operating mode. After long-term operation, the clearance between the valve seat 10 and the valve body 20 is constant.

It should be noted that the preferred embodiments of the present invention are shown in the specification and the drawings, but the present invention can be realized in many different forms, and is not limited to the embodiments described in the specification, which are not intended as additional limitations to the present invention, and are provided for the purpose of making the understanding of the present disclosure more thorough and complete. Moreover, the above technical features are combined with each other to form various embodiments which are not listed above, and all the embodiments are regarded as the scope of the present invention; further, it will be apparent to those skilled in the art that modifications and variations can be made in the light of the above teachings, and all such modifications and variations are intended to be within the scope of the present invention.

Claims

1. A programmable valve for an S-Zorb device, comprising:

the valve seat is provided with a first through hole, and a boss is arranged around the first through hole in an annular mode;

one end face of the first sealing element is abutted with the table face of the boss;

the valve body is used for being rotatably connected with an external device, is arranged on one side of the first sealing element, which is deviated from the valve seat, and is abutted against the first sealing element;

and the second sealing element is annularly arranged at the periphery of the boss, one end face of the second sealing element is abutted with the first sealing element, and the other end face of the second sealing element is abutted with the valve seat.

2. The programmable valve for an S-Zorb device according to claim 1, wherein a counter sink is formed on one side surface of the valve seat, the first through hole penetrates from the other side surface of the valve seat to a bottom surface of the counter sink, the boss is formed on the bottom surface of the counter sink, and the first and second sealing members are formed in the counter sink.

3. The programmable valve for an S-Zorb device as claimed in claim 2, wherein an end face of the first seal facing away from the boss is flush with a side surface of the valve seat where the sink is provided.

4. The programmable valve for an S-Zorb device of claim 1, wherein the valve body is spherical.

5. The programmable valve for an S-Zorb device as claimed in claim 4, wherein the contact surface of the first seal with the valve body is a circular arc surface.

6. The sequencing valve for an S-Zorb device according to claim 1, wherein the axis of the second through hole is perpendicular to the rotational direction of the valve body.

7. The programmable valve for an S-Zorb device of claim 1, wherein the second through hole has a diameter smaller than that of the first through hole.